<html class="reftest-wait">
<head>
  <script>
    function tweak() {
      var editMe = document.getElementById('editMe');
      editMe.innerHTML="a";
      document.documentElement.className = "";
    }
  </script>
</head>
<body onload="tweak()">
  Foo
  <div id="editMe" style="margin-bottom: 50px; margin-top: 50px;">
  </div>
  <div>Bar</div>
</body>
</html>
